Polini CP 21 carburetor for your racing moped, moped and small motorcycle. The racing carburetor developed by Polini has a compact design and is around 40 % lighter than comparable carburetors. The air flow is optimized thanks to the short intake path and the circular passage. The larger needle and an adapted mixing tube support the atomization of the gas mixture. This makes it very easy to tune the carburetor. In addition, consumption is reduced even at high power levels.
Fastening to the intake manifold is by means of a rubber sleeve.
Installed main throttle body: 100
Installed secondary throttle body: 40
Ø Nominal: 21 mm
Ø Air filter connection: 46 mm
Ø Intake manifold connection: 25 mm
Alternative racing carburetors, the sleeve for installation and the matching nozzles can be found in the accessories section.
Quality product from the Italian manufacturer Polini.
| Manufacturer | Polini |
| Camouflaged | No |
| Material | Aluminum |
| Area of application | Tuning, Racing, Performance |
| Component group Carburetor | Carburetor complete |
| Nominal diameter | 21 mm |
| Total length | 71 mm |
| Width | 66 mm |
| Carburetor type | CP |
| Choke control | Hand choke |
| Height | 132 mm |
| Ø fuel hose connection | 6 mm, 7 mm |
| Ø Inside entrance | 42 mm |
| Ø Output inside | 22.5 mm |
| Ø Air filter connection | 47 mm |
| Mounting type | Rubber sleeve |
| Mixed oil connection | Yes |
| Vacuum connection | Yes |
| Nozzle thread | M5x0.8 (standard thread) |
| Nozzle block | 35-12 |
| Nozzle size | 100 |
| Size of secondary nozzle | 40 |
Ratings
Accessories & related products
Polini jet set (100 - 118) main jets long version CP, Keihin, Koso, PWK
Manufacturer: Polini · Material: Brass · Component group Carburetor: Spraying · Quantity: 10 pcs · Carburetor type: CP · Drive: External hexagon · Nozzle type: Main nozzle · Nozzle size: 100 · Nozzle size: 102 · Nozzle size: 104 · Nozzle size: 106 · Nozzle size: 108 · Nozzle size: 110 · Nozzle size: 112 · Nozzle size: 114 · Nozzle size: 116 · Nozzle size: 118
46,60 EUR
Polini CP 17.5 mm carburetor (hand choke)
Nominal diameter: 17.5 mm · Manufacturer: Polini · Mounting type: Plug connection clamped · Component group Carburetor: Carburetor complete · Carburetor type: CP · Ø without reducing sleeve: 26 mm · Ø Internal connection: 24 mm · Ø Air filter connection: 46 mm · Ø fuel hose connection: 6 mm · Mixed oil connection: Yes · Vacuum connection: Yes · Choke control: Hand choke · Nozzle thread: M5x0.8 (standard thread) · Nozzle size: 62 · Area of application: Tuning · Size of secondary nozzle: 40
163,30 EUR
Polini jet set (81 - 99) main jets long version CP, Keihin, Koso, PWK
Manufacturer: Polini · Material: Brass · Quantity: 10 pcs · Component group Carburetor: Spraying · Carburetor type: CP · Carburetor type: Coso · Carburetor type: Keihin · Carburetor type: PWK · Drive: External hexagon · Nozzle type: Main nozzle · Nozzle size: 83 · Nozzle size: 85 · Nozzle size: 87 · Nozzle size: 89 · Nozzle size: 91 · Nozzle size: 93 · Nozzle size: 95 · Nozzle size: 97 · Nozzle size: 99
46,60 EUR
Polini 26 mm carburetor (hand choke)
Nominal diameter: 26 mm · Width: 65 mm · Manufacturer: Polini · Material: Aluminum · Area of application: Performance · Area of application: Racing · Area of application: Tuning · Component group Carburetor: Carburetor complete · Carburetor type: Flat slide valve · Total length: 83 mm · Height: 155 mm · Ø Inside entrance: 26 mm · Ø Output inside: 26 mm · Ø Air filter connection: 49 mm · Ø fuel hose connection: 6 mm · Ø fuel hose connection: 7 mm · Mixed oil connection: Yes · Vacuum connection: Yes · Choke control: Hand choke · Nozzle thread: M5x0.8 (standard thread) · Camouflaged: No · Nozzle size: 105 · Size of secondary nozzle: 45
169,10 EUR
Polini CP 19 mm carburetor (hand choke) rubber flange
Nominal diameter: 19 mm · Width: 66 mm · Manufacturer: Polini · Material: Aluminum · Area of application: Performance · Area of application: Racing · Area of application: Tuning · Component group Carburetor: Carburetor complete · Carburetor type: CP · Total length: 71 mm · Height: 132 mm · Ø Inside entrance: 42 mm · Mounting type: Rubber sleeve · Ø Output inside: 21.8 mm · Ø Air filter connection: 47 mm · Ø fuel hose connection: 6 mm · Ø fuel hose connection: 7 mm · Mixed oil connection: Yes · Vacuum connection: Yes · Choke control: Hand choke · Nozzle thread: M5x0.8 (standard thread) · Nozzle block: 35-12 · Camouflaged: No · Nozzle size: 90 · Size of secondary nozzle: 40
174,90 EUR
Polini CP 23 mm carburetor (cable choke) rubber flange
Nominal diameter: 23 mm · Width: 66 mm · Manufacturer: Polini · Material: Aluminum · Area of application: Performance · Area of application: Racing · Area of application: Tuning · Component group Carburetor: Carburetor complete · Carburetor type: CP · Total length: 71 mm · Height: 132 mm · Ø Inside entrance: 42 mm · Mounting type: Rubber sleeve · Ø Output inside: 25 mm · Ø Air filter connection: 47 mm · Ø fuel hose connection: 6 mm · Ø fuel hose connection: 7 mm · Mixed oil connection: Yes · Vacuum connection: Yes · Choke control: Cable choke · Nozzle thread: M5x0.8 (standard thread) · Nozzle block: 35-12 · Camouflaged: No · Nozzle size: 110 · Size of secondary nozzle: 40
163,30 EUR
Moped fans also bought
swiing® ingenious clutch springs reinforced (+20%) | Puch E50
Spring design: Pressure spring · Ø wire: 1.7 mm · Manufacturer: swiing® ingenious parts · Material: Spring steel · Surface: coated · Color: blue · Total length: 28 mm · Ø inside: 4.8 mm · Ø outside: 8.3 mm · Number of components: 3 pcs · Area of application: Tuning
20,90 EUR
Hot 
Gas cable Ø 1.25 mm x 220 cm (cylindrical nipple) Bing
Ø nipple: 3 mm · Manufacturer: Made in Germany · Material: Steel · Surface: galvanized (blue) · Ø Stranded wire: 1.25 mm · Nipple shape: Cylinder · Cable length: 2200 mm · Nipple length: 5 mm · Number of components: 1 pcs · Area of application: Standard
2,80 EUR
NGK CR6 Racing ignition cable & plug High End red / 5 kΩ interference suppressed
Color: red · Manufacturer: NGK · Material: Rubber · Ø cable: 7 mm · Cable available: Yes · Cable length: 1000 mm · Suppressed: Yes · Resistance: 5000 Ω · Subcategory: Ignition cable · Subcategory: Spark plug connector
46,60 EUR
Inox
Hot
Bumm mirror round Inox
Manufacturer: Bumm · Material: Chrome steel (colloquially known as stainless steel) · Material: Steel · Test mark: none · Surface: chrome-plated · Color: Chrome · Clamping diameter: 22 mm · Ø mirror surface: 107 mm · Ø mirror rod: 8 mm · Mirror rod length: 300 mm · Thread type: M8x1.25 (standard thread) · Total length: 360 mm · Thread size: M8
32,60 EUR
swiing® ingenious intake manifold Gilardoni italkit Inox
Manufacturer: swiing® ingenious parts · Material: Aluminum · Ø inside: 21 mm · Mounting type: Screws · Ø External connection: 24 mm · Total length: 80 mm · Total height: 55 mm · Height flange center hole: 42.5 mm · Number of fixing points: 4 pcs · Hole pattern [mm]: 60 x 35 · Camouflaged: No · Area of application: Tuning
79,20 EUR
Polini jet set (100 - 118) main jets long version CP, Keihin, Koso, PWK
Manufacturer: Polini · Material: Brass · Component group Carburetor: Spraying · Quantity: 10 pcs · Carburetor type: CP · Drive: External hexagon · Nozzle type: Main nozzle · Nozzle size: 100 · Nozzle size: 102 · Nozzle size: 104 · Nozzle size: 106 · Nozzle size: 108 · Nozzle size: 110 · Nozzle size: 112 · Nozzle size: 114 · Nozzle size: 116 · Nozzle size: 118
46,60 EUR
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
